attery type: Li-Polymer; Capacity: 4000 mAh Voltage: 10.95V; Cells: 6-cell.
Note: This is not an Apple original battery, its a branded compatible battery
Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability.
About 500 recharge cycles over the life of the battery; CE-/FCC-/RoHS-Certified for safety.
Operation time for standard batteries(eg, 4000mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.

Our brand new 58wh(10.8V) replacement APPLE A1331 are made with high quality cells ( SANYO, BAK, SAMSUNG etc.), lasting as long as the original battery did. All of our Li-ion replacement batteries for APPLE A1331 have been tested and proven to match and/or exceed original battery performance and 100% compatible with Original Manufacturer Specifications. Every piece of APPLE A1331 has been tested on APPLE systems to ensure the safety for your Dell laptop.

This high quality rechargeable APPLE A1331 is designed with the highest control standards; have internal circuit boards with smart chips ( Cell imbalance shut off protection, Thermal runaway protection, Overcharge shut off protection, Over discharge shut off protection, High/low temperature shut off protection ), and are made from eco-friendly materials without lead or mercury. Every replacement APPLE laptop batterry has been Certified by CE, UL, ROHS, ISO9001/9002 and has passed strict safety tests. Long lasting, this extended APPLE A1331 battery can be charged/discharged for more than 500-700 cycles.